Dean B. Andropoulos, M.D., M.H.C.M., is Anesthesiologist-in-Chief and Chair of the Department of Anesthesiology, Perioperative and Pain Medicine at Texas Children's Hospital, and Professor of Anesthesiology and Pediatrics at Baylor College of Medicine in Houston, Texas. A leading authority in pediatric anesthesiology, he has co-edited multiple editions of Gregory's Pediatric Anesthesia and authored Anesthesia for Congenital Heart Disease. George A. Gregory, M.D., is Professor Emeritus in the Department of Anesthesia and Perioperative Care and Department of Pediatrics at the University of California, San Francisco. A pioneer in pediatric anesthesiology, Dr. Gregory first authored and edited this foundational textbook in 1983, establishing it as a comprehensive reference that underpins the unique knowledge base of the subspecialty through seven successive editions.